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Finding the Fourth Proportional to 18,688,810.60, 27,970,230.30 and 18,688,810.60

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Solution

The fourth proportional to 18,688,810.60, 27,970,230.30 and 18,688,810.60 is: 27,970,230.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,688,810.60 : 27,970,230.30 = 18,688,810.60 : x
  2. Step 2: Convert to fraction form
    18,688,810.60/27,970,230.30 = 18,688,810.60/x
  3. Step 3: Cross multiply
    18,688,810.60x = 27,970,230.30 × 18,688,810.60
  4. Step 4: Simplify right side
    18,688,810.60x = 522,730,336,515,081.25
  5. Step 5: Solve for x
    x = 522,730,336,515,081.25/18,688,810.60
  6. Step 6: Final answer
    x = 27,970,230.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.